In April, 14 people were killed when a bomb was detonated on a packed underground train in St Petersburg.

Russia put itself further in the crosshairs of sick terrorists after the Kremlin ordered a relentless bombing campaign against their comrades in Syria last year — seen by many as a decisive turning point in the war.

Another propaganda poster shows an armed fighter looking over Moscow’s Luzhniki Stadium — where the World Cup final will be played on 15 July 2018.

It reads: “O enemies of Allah in Russia, I swear that the fire of the mujahideen will burn them, just wait”.